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三角形的三线
Author:
Xiaoting Yuan
Topic:
Triangles
GeoGebra
New Resources
畫出對稱圖形
柱體建築師
三位數除以一位數（二）
兩位數加法
兩組對邊相等和有直角的四邊形
Discover Resources
parallelogram
最大斜率的直線
四角柱算體積(可以切開)
三角形三边关系
数学试卷难点解题思路
Discover Topics
Root
Unit Circle
Percentages
Polynomial Functions
Vectors